What songs?
Were they downloaded and stored onto the device?

If so, files like that should be stored onto the SD card.

 

what app are you using to listen to music?

 

Anything like that, that is stored on a device, should (A) be on backup somewhere else and (B) be stored on the SD card- not on the internal memory of the device.

There is the slight chance that the files still exist, but finding them may be a challenge.

If data/files have/has been added to the device since the update, this chance is even more slight.


https://f-droid.org/en/packages/com.ghostsq.commander/